Detainees at Harmondsworth immigration removal centre signed a protest letter after the man’s death. Photograph: Bruno Vincent/Getty Images. A 28-year-old Polish man has died after an earlier attempt to kill himself at an immigration removal centre in London . The incident happened at the Harmondsworth detention centre last Sunday, the day before the BBC aired a damning documentary that showed guards at another IRC mistreating vulnerable people , including those who were suicidal. The Guardian received reports on Monday about the incident from lawyers, detainees and charities – first that the man had died and then that he was on a life support machine. However, the Home Office repeatedly refused to confirm these accounts. Full story